General Chemistry

Only available for you

76 Ozone consists of :

A
Oxygen only
B
Oxygen and Nitrogen
C
Hydrogen and Carbon
D
Oxygen and Carbon

77 If all bullets could not be removed from gun shot injury of a man, it may cause poisoning by which of the following:

A
Mercury
B
Lead
C
Iron
D
Arsenic

78 The chemical(s) most commonly used for cloud seeding or ‘artificial rainmaking’ is/are

A
Silver Iodide
B
Sodium Chloride
C
Dry ice or frozen carbon dioxide
D
All the above

79 Acid secretion is characteristic of :

A
Buccal cavity
B
Stomach
C
Small intestine
D
Large intestine

80 An emulsion is a colloid of a

A
gas in a liquid
B
liquid in a liquid
C
liquid in a gas
D
gas in a solid

81 Denatured spirit is ethanol mixed with

A
Petrol
B
Kerosene
C
Water
D
Pyridine

82 The gas used in the artificial ripening of fruits is :

A
Acetylene
B
Methane
C
Ethane
D
Butane

83 The isotope of Uranium used in atomic reactors is :

A
U235
B
U236
C
U237
D
U232

84 Dry powder fire extinguishers contain :

A
sand
B
sand and sodium carbonate
C
sand and potassium carbonate
D
sand and sodium bicarbonate

85 Curd is sour due to presence of :

A
Tartaric acid
B
Lactic acid
C
Acetic acid
D
Oxalic acid

86 Preparation of ‘Dalda or Vanaspati’ ghee from vegetable oil utilizes the following process :

A
Hydrolysis
B
(2)Oxidation
C
Hydrogenation
D
Ozonolysis

87 Alum stops bleeding in minor cuts because of :

A
solvation
B
emulsion
C
dialysis
D
coagulation

88 Polythene is polymer of :

A
Ethylene
B
Propylene
C
Acetylene
D
Aniline

89 Drinking soda is :

A
Alkaline
B
Acidic
C
Neutral
D
Oxidant

90 Greenhouse effect is caused by which of the following:

A
nitrogen
B
carbon dioxide
C
carbon monoxide
D
nitrogen dioxide